clog
, clogf
—complex base-e logarithm#include <complex.h> double complex clog(double complex z); float complex clogf(float complex z);
Description
These functions compute the complex natural (base-e) logarithm
of z, with a branch cut along the negative real axis.
clogf
is identical to clog
, except that it performs
its calculations on floats complex
.
Returns
The clog functions return the complex natural logarithm value, in
the range of a strip mathematically unbounded along the real axis
and in the interval [-i*pi , +i*pi] along the imaginary axis.
Portability
clog
and clogf
are ISO C99